diff --git a/libs/libc/stdio/lib_dtoa_engine.c b/libs/libc/stdio/lib_dtoa_engine.c
index 4bc8884f91908..76ccb7dbf8757 100644
--- a/libs/libc/stdio/lib_dtoa_engine.c
+++ b/libs/libc/stdio/lib_dtoa_engine.c
@@ -51,6 +51,20 @@
  * by pasting the value of DBL_DIG onto '1e' to
  */
 
+/* Green hills #define DBL_DIG (6) or #define DBL_DIG (15)
+ * we need remove "()" here
+ */
+
+#if DBL_DIG == 6
+#  undef DBL_DIG
+#  define DBL_DIG 6
+#endif
+
+#if DBL_DIG == 15
+#  undef DBL_DIG
+#  define DBL_DIG 15
+#endif
+
 #define PASTE(a)      1e##a
 #define SUBSTITUTE(a) PASTE(a)
 #define MIN_MANT      (SUBSTITUTE(DBL_DIG))